JP2001186811A - Expansion and contraction type auger apparatus of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a grain discharging auger itself from falling downward when a movable conveying cylinder is extended by making the grain discharging auger constituted of a stationary conveying cylinder and the movable conveying cylinder movable in the lengthwise direction and lightening the weight of the movable conveying cylinder. SOLUTION: In a combine harvester comprising a grain tank 3 for temporarily storing grain, a grain lifting cylinder 4 for discharging the grain temporarily stored in the grain tank 3 and the grain discharging auger 5 on a traveling body 2 having a traveling apparatus 1, this expansion and contraction type auger apparatus of the combine harvester is characterized in that the grain discharging auger 5 is constituted of the stationary conveying cylinder 6 and the movable conveying cylinder 7 which is engaged with the stationary conveying cylinder 6 and is expanded and contracted in the lengthwise direction, plural expansion and contraction movable screws 8 are installed in the movable conveying cylinder 7 and the expansion and contraction movable screws 8 are made of a synthetic resin material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable auger device for a combine, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, a combine is provided with a threshing device for threshing a harvested culm and a Glen tank for storing and storing grains after threshing. And And the Glen tank is
With the progress of the work, when the grains that are sequentially stored are full, the stored grains are stored in a tank of a truck waiting by using a filing device and a discharge auger from the interior discharge spiral. It is designed to be carried out.

[0003] The unloading auger is provided such that a movable transfer cylinder at the tip end having a grain discharge port is slidably inserted and fitted into a fixed transfer cylinder at the base side, and a grain discharge port at a transfer end. Is configured to be able to expand and contract in the perspective direction. And the expansion and contraction movement spiral in the movement conveyance cylinder was made of steel.

[0004]

In the telescopic auger apparatus, the work is performed by deciding a carry-out place by adjusting a grain discharge port at a transfer end of a movable transfer tube to a tank of a truck. Because the moving telescopic spiral is made of steel,
When the movable transfer cylinder is extended, a bending moment is generated, and the grain discharge auger is bent. For this reason, in order to increase the rigidity of the grain discharge auger, various reinforcements have been performed, so that a problem has arisen that the weight of the whole grain discharge auger and the entire combine becomes heavier.

[0005]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. That is, according to the first aspect of the present invention, the grain tank 3 for temporarily storing the grains on the traveling vehicle body 2 having the traveling device 1 and the grain-lifting for discharging the grains temporarily stored in the grain tank 3 A combine provided with a cylinder 4 and a grain carrying auger 5, wherein the grain carrying auger 5 is fitted to the fixed carrying cylinder 6 and the fixed carrying barrel 6, and a movable carrying cylinder 7 that moves and expands and contracts in the longitudinal direction. A plurality of telescopic moving spirals 8 are provided in the moving transport cylinder 7, and the telescopic moving spirals 8 are made of a synthetic resin material. is there.

According to the second aspect of the present invention, the telescopic movable spiral 8 is configured such that the resistance of the grain conveying surface side is smaller than the grain non-transporting surface side. Item 10 is a combined telescopic auger device according to item 1. According to a third aspect of the present invention, in the telescopic movable spiral 8, the spiral end surface 9 has a curved surface shape.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
Although not specifically shown, as conventionally known,
It is mounted on the traveling vehicle body 2 in parallel with the side of the threshing device, and is configured to be able to store the grain after threshing and sorting, which is conveyed from the threshing device via the first threshing device. And
As shown in FIG. 1, the discharge spiral 10 is mounted on the bottom of the Glen tank 3 so as to be mounted on the shaft. The start end is connected to a transmission shaft 11 outside the machine via a clutch device 12, and the end is connected to the lifting cylinder 4 And is connected to the lower end of the fried spiral 13 inside.

A grain carrying auger 5 is fixedly transported to the upper part of the fried grain barrel 4 so as to be rotatable up and down.
, And a movable transfer cylinder 7 connected to the pipe. The configuration will be specifically described below. First, as shown in FIG. 1, the fixed transport cylinder 6 has a base connected to the upper part of the hulling cylinder 4 and a distal end extended outwardly. Conveyor spiral 14 connected to grain spiral 13
And transports the grains inherited from the fryer 4.

As shown in FIG. 1, the movable transfer cylinder 7 is provided with a grain discharge port 15 opened at the distal end, and the base is inserted and fitted from the distal end of the fixed transport cylinder 6. It is slidably connected. Next, the telescopic moving spiral group 8A is
As shown in FIG. 1, in the movable transfer cylinder 7, the front end portion is supported above the grain discharge port 15, and the rear portion is extended toward the fixed transfer tube 6 and slides in the axis of the transfer spiral 14. A freely inserted transmission shaft 16 is provided around a shaft, and a large number of helical single-unit telescopic movable spirals 8 are slidably fitted to the transmission shaft 16 so that the mutual distance can be adjusted.

As shown in FIG. 2, the helix 8 is a mounting member 18 formed in a substantially semi-cylindrical shape on the outer periphery of a bearing boss 17 which is slidably fitted on the transmission shaft 16. And the spiral part 19 is attached. The bearing boss 17 is, as shown in FIG.
It is formed shorter than the conventional type, and has a configuration of A (dimensions of the bearing boss 17 of the present invention) <B (dimensions of the conventional bearing boss). Therefore, as shown in FIG. 4, when the helix portion 19 is closest to the adjacent helix portion 19 ′ as shown in FIG. It is formed in a short length that is spaced apart from and does not touch. And the bearing boss 17 is
A spacer projection 20 is provided at the end to maintain a space between adjacent bearing bosses 17 '. Reference numeral 21 denotes a helix locking body, which locks the adjacent helix portions 19 'to prevent detachment (even when the helix 8 of the helix single body is maximally separated, the helix portions 19 are connected). And

The helically extending and retracting helical unit 8 constructed as described above is restricted in the rotation direction with respect to the transmission shaft 16 having a square axis (in the embodiment, a hexagonal axis), and slides in the axial direction. They are fitted in a free state, and a plurality of them constitute a series of stretchable and movable spiral group 8A.

Next, as shown in FIG. 1, the telescopic drive unit 22 connects the base end of the screw shaft 24 to a telescopic control motor 23 mounted on the upper part of the fryer 4 via a reduction gear. And forced driving. And the moving device 25
Is provided so as to be forcibly moved in the axial direction via a transmission pin engaged with the screw groove of the screw shaft 24, and is integrally connected to the base side of the movable transfer cylinder 7. ing.
As shown in FIG. 1, the expansion / contraction driving device 22 has limit sensors S1 and S2 on the reduction side and the expansion side, respectively, and automatically stops the expansion / contraction control motor 23 when the moving device 25 reaches. I have.

Although not specifically shown, the telescopic control motor 23 moves in the forward or reverse direction based on the ON operation of a switch (telescopic switch) provided on the operation panel of the cockpit. When the screw shaft 24 rotates forward, the moving device 2 is engaged.
When the movable transfer cylinder 7 is extended through the position 5 and reversely rotated, the movable transfer cylinder 7 is forcibly moved in the contraction direction.

In this manner, the movable transfer cylinder 7 expands and contracts along the fixed transfer cylinder 6 in the fitted state, and moves the position of the grain discharge port 15 at the distal end to the base grain discharge port. In contrast to 4, the distance of the grain can be selected by adjusting the distance or approach distance. In FIG. 1, 26
Denotes a lifting hydraulic cylinder, 27 denotes a turning motor, 28 denotes a driving gear, and 29 denotes a turning gear.

As shown in FIG. 1, the support roller 30 is provided at a lower portion of the base position of the movable transfer cylinder 7 so as to be supported by a shaft.
The configuration is such that the peripheral surface of the fixed transport cylinder 6 is supported while rolling. Further, a guide wheel 31 is provided above the base position of the movable transfer tube 7, and a guide rail 32 for guiding the guide wheel 31 is provided in the longitudinal direction of the fixed transfer tube 6. Specifically, as shown in FIG. 5, the guide wheel 31 includes a left guide wheel 31a and a right guide wheel 31b, and is connected to each other via a shaft 31c. The guide rail 32 includes a left guide rail 32a provided outside the left guide wheel 31a and a right guide rail 32b provided outside the right guide wheel 31b.

Further, the shape of the contact surface of the left guide wheel 31a and the right guide wheel 31b with respect to the fixed transfer cylinder 6 is as follows.
It is configured so as to conform to the substantially outer peripheral surface shape of the fixed transport cylinder 6.
Therefore, the movable transfer cylinder 7 is about to rotate in the circumferential direction.
That is, the decrease in the swing is significantly reduced.

When the combine constructed as described above is advanced while being operated, the planted grain culm is cut by a cutting device 33 which is a well-known combine operation, and then transported to the starting end of a threshing device 34. Then, while being transported by the feed chain 35, threshing is performed. The grains selected by threshing by the threshing device 34 are temporarily stored in the Glen tank 3, and when the grains in the Glen tank 3 become full, the grain discharge auger 5 is separated from the auger receiver 36, and The grains are discharged from the grain carrying auger 5 to a bed such as a truck. At this time, when the position of the grain discharge port 15 is short, the movable transport cylinder 7 is extended to discharge the grain farther. In addition, the movable transport cylinder 7 is expanded and contracted so that the grains are uniformly discharged to the carrier. When the grains in the Glen tank 3 have been discharged in this way, the grain carrying auger 5 is stored in the auger receiver 36 again.

Since the spiral helix 8 of the helix alone in the movable transport cylinder 7 is made of steel, when the movable transport cylinder 7 is extended, a bending moment due to gravity acts,
The problem that the grain discharge auger 5 itself bends downward has occurred. Further, since the grain discharge auger 5 is reinforced to prevent such bending, the weight of the grain discharge auger 5 itself is further increased, and the weight of the entire combine is also increased.

Therefore, the expansion / contraction helix 8 of the helix alone is made of a synthetic resin material. That is, the bearing boss 17, the mounting member 18, the helical portion 19, the projection 20, and the helical locking member 21 are all integrally formed of a synthetic resin material. Thus, the weight of the grain discharge auger 5 itself is reduced, so that the bending moment is reduced even if the movable transfer tube 7 is extended, and the grain discharge auger 5 can be prevented from bending.

Next, referring to FIGS. 7 to 9, a description will be given of another embodiment of the spirally movable helical unit 8 alone (stretchable and helically movable spiral unit 37). A mounting member 39 is formed on the upper portion of the bearing boss 38, and a helical locking portion 41 is formed on both left and right ends of the mounting member 39. The helical portion 40 is a helical locking portion 41 of the mounting member 39.
It is configured to pass from the upper part, pass through the lower part of the bearing boss 38, and be wound around the upper part of the spiral locking part 41 on the other side. The inside of the bearing boss 38 is formed as a hexagon, and the transmission shaft 16 described above is fitted therein. In addition, the spiral locking part 4
Reference numeral 1 denotes a configuration in which the helix engaging portion 41 of the stretchable movable spiral 37 of the adjacent single spiral is engaged, and the plurality of stretchable movable spirals 37 of the single spiral is moved and extended by the spiral anchor 41.

The helix 37 of the above-structured single spiral can be made of a synthetic resin material. Accordingly, since the weight of the grain discharge auger 5 itself is reduced, it is possible to prevent the distal end portion, that is, the grain discharge port 15 from being bent downward when the movable transport cylinder 7 is extended. Therefore, since it is not necessary to reinforce the grain discharge auger 5 and the frying cylinder 4, the weight of the combine is also reduced.

Next, FIG. 10 will be described. In the above-described synthetic resin helical single-piece stretchable moving spiral 37, the surface of the grain conveying surface 42 of the spiral part 40 is finished in a smoother state than the grain non-transporting surface 43. Thus, the grains can be smoothly transported, and the grains themselves can be prevented from being damaged.

Next, FIGS. 11 to 14 will be described.
FIG. 13 is a cross-sectional view taken along the line S1-S1 of the stretchable movable spiral 37 made of a synthetic resin spiral as shown in FIG.
Is shown. The head 9 has a curved shape as shown. This can prevent damage to the grain during transportation.

FIG. 14 is an S2-S2 cross section and an S3-S3 cross section of the synthetic resin spiral helix 37 shown in FIG. 11, and shows an end 40b of the helix portion 40. The end 40b has a curved shape as shown in the figure. This can prevent damage to the grain during transportation.

Next, FIG. 15 will be described. A brush-like portion 40c is formed on the outer peripheral portion of the helical portion 40 of the stretchable movable helical 37 made of a synthetic resin alone. The brush-like part 4
Numeral 0c is made of a synthetic resin and is integrated with the expansion / contraction helix 37 of the synthetic resin alone. This allows
Most of the grains transported in the grain discharge auger 5 are the grain discharge ports 1
5, so that it is possible to prevent kernels from remaining in the kernel outlet 15.

Next, FIGS. 16 to 18 will be described.
In the helical portion 40 of the stretchable movable helical member 37 made of a synthetic resin alone, the tip portion 40d of the helical portion 40 is thinly formed, and the tip portion of the tip portion 40d slightly contacts the inside of the grain discharging auger 5. It is configured to touch. FIG.
8 is an S4-S4 cross section of FIG. Therefore, since the tip portion 40d transports most of the grains to the grain discharge port 15, it is possible to prevent the grains from remaining in the grain discharge auger 5.

Next, FIG. 19 will be described. A gap portion 44 (hatched portion) between the spiral portion 40 and the bearing boss 40 in the stretchable movable spiral 37 made of a synthetic resin alone.
Molded so as to eliminate. Thereby, the area of the conveying surface of the spiral part 40 increases, so that the conveying ability of the grain is improved.

[0028]

The present invention has been configured as described above.
According to the first aspect of the present invention, since the weight of the grain discharge auger 5 itself is reduced, when the movable transport cylinder 7 is extended,
It becomes possible to prevent downward bending of the distal end portion. Therefore, since it is not necessary to reinforce the grain discharge auger 5 and the frying cylinder 4, the weight of the combine is also reduced.

According to the second aspect of the present invention, the grain can be smoothly transported, and the grain itself can be prevented from being damaged. In the invention according to claim 3,
Since the head 9 is formed in a curved shape, it is possible to prevent damage to the grain during transportation.

[Brief description of the drawings]

FIG. 1 is a right side view

FIG. 2 is a right side view

FIG. 3 is a rear view

FIG. 4 is a right side view

FIG. 5 is a sectional view

FIG. 6 is a left side view of the combine.

FIG. 7 is a right side view.

FIG. 8 is a plan view

FIG. 9 is a perspective view

FIG. 10 is a right side view.

FIG. 11 is a right side view.

FIG. 12 is a rear view.

FIG. 13 is a sectional view

FIG. 14 is a sectional view

FIG. 15 is a right side view.

FIG. 16 is a right side view.

FIG. 17 is a rear view.

FIG. 18 is a sectional view

FIG. 19 is a right side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Traveling device, 2 ... Traveling vehicle body, 3 ... Glen tank, 4 ...
5: grain transporting auger, 6: fixed transport cylinder, 7: movable transport cylinder, 8: telescopic moving spiral, 9: spiral end face.

Continuation of the front page F term (reference) 2B396 JA04 JC07 JG02 JG14 KC02 KE03 LA04 LE04 LE18 LP03 LP08 LP12 LP17 LR02 LR08 LR13 LR19 MA07 MC02

Claims (3)

[Claims] 1. A Glen tank (3) for temporarily storing grains on a traveling vehicle body (2) having a traveling device (1);
And a grain carry-out auger 5 for discharging the grains temporarily stored in the above-mentioned, and the grain carry-out auger 5 is fitted to the fixed carrying barrel 6 and the fixed carrying barrel 6. Together
A plurality of telescopic moving spirals 8 provided in the moving conveying cylinder 7, and the telescopic moving spirals 8 are made of a synthetic resin material. Combine telescopic auger device. 2. The combine movable helix 8 according to claim 1, wherein a resistance of the grain conveying surface side is smaller than a grain non-transporting surface side. Telescopic auger device. 3. The extendable telescopic auger device according to claim 2, wherein the helical end surface 9 of the telescopic movable spiral 8 has a curved shape.